FCAWTypeMetal-coredNicore 55 is a flux-cored, tubular wire for the welding of cast iron. The weld metal is of a nickel-iron composition to maximise flexibility for welding cast iron not only to itself but also to steel and a wide range of other ferrous and non-ferrous materials. Shielding gas: 98%Ar / 2% O2.Welding currentDC+